strip coal的意思|示意

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strip coal相关短语

1、 strip coal mining 露天采煤

2、 strip coal mine 露天煤矿

3、 strip coal pillars 条带煤柱

4、 strip coal p illar 条

5、 deep strip coal mine 深露天煤矿

6、 strip mining of coal 露采煤矿

7、 strip extraction coal-pillar mining 条采煤柱回收

8、 strip closed coal yard 封闭条形煤场